Lasioglossum (Dialictus) pruinosum (Robertson)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216: 159

publication ID

http://doi.org/ 10.5281/zenodo.1049595

publication LSID

lsid:zoobank.org:pub:B5AF6DF4-D3A7-4942-A94F-CC051D8074CF

persistent identifier

http://treatment.plazi.org/id/9A5987DB-A788-FF29-0A97-89EBFC160317

treatment provided by

Plazi

scientific name

Lasioglossum (Dialictus) pruinosum (Robertson)
status

 

Lasioglossum (Dialictus) pruinosum (Robertson)  

Halictus pruinosus Robertson, 1892: 269   . Ƥ 3.

Lectotype. Ƥ USA, Illinois, Macoupin Co., Carlinville, 22.v. 1891 (C. Robertson); [ INHS: 11121] by W. E. LaBerge (in Webb 1980). Examined.

Taxonomy. Robertson, 1902 b: Chloralictus pruinosus   , p. 248 (key); Cockerell, 1909: Halictus pruinosus   , p. 9 (tax. comp.); Michener, 1951: Lasioglossum (Chloralictus) pruinosum   , p. 1116 (catalogue); Mitchell, 1960: Dialictus pruinosus   Ƥ 3, p. 415. (redescription); Krombein, 1967: Lasioglossum (Dialictus) pruinosum   , p. 465 (catalogue); Dialictus pruinosus   , p. 1970 (catalogue); Moure & Hurd, 1987: Dialictus pruinosus   , p. 125 (catalogue); Gibbs, 2010 b: Lasioglossum (Dialictus) pruinosum   Ƥ 3, p. 269 (redescription, key).

Diagnosis. Female L. pruinosum   can be recognised by the following diagnostic combination: head long (length/ width ratio = 1.05–1.09); mesoscutal punctation dense (i<d), except on medial portion (i= 1–1.5 d); mesepisternum rugulose; wings hyaline; pterostigma nearly white pterostigma; and metasomal terga with abundant tomentum. They are most similar to L. succinipenne   , which has the mesoscutal punctures dense throughout.

Male L. pruinosum   can be recognised by the following diagnostic combination: head long (length/width ratio = 1.18–1.21), covered in dense white tomentum; clypeus with distal yellow maculation; flagellomeres short (length/width ratio = 1.15–1.30), bright yellow ventrally; mesoscutal punctation moderately sparse medially (i= 1–2 d); mesepisternum rugoso-reticulate; and metasomal terga bluish green, distinctly punctate. They are most similar to L. albipenne   , which lacks yellow on clypeus and have brown metasomal terga.

Range. British Columbia and south to Arizona east to north-eastern USA. USA: AZ, CO, IA, ID, IN, MI, MN, NE, TX, UT, WI. CANADA: AB, BC, MB, SK.

DNA Barcode. Available. Multiple sequences.

Comments. Uncommon in the eastern United States. See Gibbs (2010).

INHS

Illinois Natural History Survey

DNA

Department of Natural Resources, Environment, The Arts and Sport

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Halictidae

Genus

Lasioglossum

Loc

Lasioglossum (Dialictus) pruinosum (Robertson)

Gibbs, Jason 2011
2011
Loc

Halictus pruinosus

Robertson 1892: 269
1892